Laugh about grabbing tense canine, for one (5)
I believe the answer is:
tooth
'canine for one' is the definition.
(I know that canine tooth is a type of tooth)
'laugh about grabbing tense' is the wordplay.
'laugh' becomes 'hoot' (I've seen this before).
'about' is a reversal indicator.
'grabbing' means one lot of letters goes inside another.
'tense' becomes 't' (abbreviation used in many dictionaries).
'hoot' reversed gives 'tooh'.
'tooh' going around 't' is 'TOOTH'.
(Other definitions for tooth that I've seen before include "Incisor, e.g." , "Piece of ivory" , "for drilling and extraction" , "Canine or incisor?" , "Canine, for example" .)